Main process Animation Play

Mass spectrometer Animation Play

Matter Whiteboard exercise Play

Matter Student activity Play

Maxwell–Boltzmann distribution of molecular energies Student activity Play

Mean kinetic energy of gas molecules Animation Play

Mean velocity and the root-mean-square velocity of gas molecules Student activity Play

Mean velocity and the root-mean-square-root velocity of gas molecules Animation Play

Mean velocity and the root-mean-square-root velocity of gas molecules Animation Play

Mean velocity and the root-mean-square-root velocity of gas molecules Animation Play

Mean velocity and the root-mean-square-root velocity of gas molecules Whiteboard exercise Play

Measurement of mass change during the reaction Whiteboard exercise Play

Measurement of the volume of gas during decomposition of a substance Animation Play

Measuring mass changes in the reaction mixture Animation Play

Measuring the pressure of the gas evolved Animation Play

Measuring the volume of gas evolved Animation Play

Melting and boiling points Simulation Play

Melting and boiling points (1) Student activity Play

Melting point Student activity Play

Melting points and boiling points Student activity Play

Metals as catalysts Animation Play

Metals easily form cations Student activity Play

Metals easily form cations Whiteboard exercise Play

Meteor Animation Play

Methane – another component of the carbon cycle Slideshow Play